100PCS Metal Binder Book Rings, Colourful Index Card Rings 30mm Metal Loose Leaf Binder Rings Paper Notebook Rings Flash Card Rings Key Chains for School Office Home

•Package Includes: This set contains 100 pack metal steel rings for index cards in 10 vibrant colours, with 10 pieces of each colour. colorful paper rings to meet your different needs.

•Premium Material: Loose paper binder rings are made of sturdy nickel-plated metal, resistant to rust, open and close smoothly and easily. The surface of the book rings are treated with baking paint,painted in an assortment of metallic hues, aiding in easy sorting and organisation. Resistant to corrosion and rust, color unfading. These book rings are durable and designed for repeated use.

•Flash Card Binder Rings Dimensions: Each ring has an outer diameter of 1.2 inch (30mm) outer diameter, 1 inch (25.6mm) inner diameter, ring thickness（2.2mm）, the right size for your daily needs, which can hold up to 175 sheets of papers.

•Locking Structure: The 30mm metal paper rings are convenient to operate, they are easy to open and close, allowing you to easily open and close the metal ring to add or remove paper.